Furos had a long and slender body covered with brown, black, white, or mixed fur. Average length was 50 centimeters including a 12-centimeter tail. They weighed 0.2 to 1.8 kilograms, with males substantially larger than females. Gestation was 42 days, litters were usually 3 to 7 young, but sometimes more. Females would have two to three litters annually. Young were weaned after 3 to 6 weeks and became independent at 3 months. Sexual maturity would come at 6 months. Average life span was 8 years. Furos spent 14–18 hours a day asleep and were most active around the hours of dawn and dusk. Furo were not solitary animals and lived happily in social groups. They were territorial, liked to burrow, and preferrd to sleep in an enclosed area. When excited, they would perform a routine commonly referred to as the furo war dance, characterized by a frenzied series of sideways hops and bumping into things. Despite its zeal, this was not aggressive but was a joyful invitation to play. It was often accompanied by a soft clucking noise. When agitated or upset, on the other hand, furos would make a distinct hissing noise.